Trade-Specific Associations for Subcontractors
Trade Associations •
International Association of Bridge, Structural, Ornamental, and Reinforcing Iron Workers (IW)
International Association of Bridge, Structural, Ornamental, and Reinforcing Iron Workers (IW)
The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers, AFL-CIO is a trade association representing 120,000 union iron workers. It provides training, education, and advocacy to protect and advance the iron industry in North America.

Trusted by trade contractors across the country












- Ability to participate in a collective bargaining agreement that provides bigger paychecks, better benefits, more secure jobs, and safe working conditions
- Eligibility for Union Plus benefits and discounts
- Access to life, accident & hospital supplemental benefits for ironworkers
- 120+ years of digital magazine archives covering every aspect of the iron industry
Trade-Specific Associations for Subcontractors
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Other trade associations
Wall & Ceiling Alliance (WACA)
The Wall And Ceiling Alliance (WACA) is a trade association that promotes and advocates for the welfare of its members in the wall and ceiling industry. It provides educational forums, technical assistance, government advocacy, labor relations, industry promotion, and unified representation for its community.
Mechanical HVAC / Plumbing
Sheet Metal and Air Conditioning Contractors' National Association (SMACNA)
The Sheet Metal and Air Conditioning Contractors’ National Association has more than 100 chapters and 3,500 members across the US, Canada, Australia, and Brazil. Its mission is to create a competitive advantage for sheet metal and air conditioning contractors through education, labor relations, standards development, industry representation, and business studies.
Construction Financial Management Association (CFMA)
The Construction Financial Management Association provides career development and networking opportunities for construction finance professionals. CFMA members are CFOs, controllers, treasurers, and staff accountants and admins working at developers; major commercial construction companies in general, specialty trades, industrial, and heavy/highway sectors; and companies that serve construction, like CPAs, outsourced accounting firms, banks, sureties, and insurance brokers.